Energy Flow in Ecosystems

The major energy source on our planet is the _________________

• sun

• moon

• wind

• water

Tags

NGSS.MS-ESS2-4

Define Gross Primary Productivity (GPP).

• The total amount of carbon dioxide that is fixed by plants in photosynthesis.

• The amount of energy available to herbivores in an ecosystem.

• The rate at which energy is used by plants for respiration.

• The total biomass of all living organisms in an ecosystem.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Define Net Primary Productivity (NPP).

• The total amount of energy captured by producers in an ecosystem.

• The energy available to consumers after producers have used some for respiration.

• The total biomass of all organisms in an ecosystem.

• The rate at which producers convert solar energy into chemical energy.

Tags

NGSS.HS-LS1-5

The Net Primary Productivity (NPP) of Earth shifts up and down on the globe from year to year because:

• A) Changes in solar radiation and temperature.

• B) Variations in ocean currents.

• C) Fluctuations in atmospheric pressure.

• D) Human activities.

Tags

NGSS.HS-LS2-5

NGSS.HS-ESS2-4

Only 10% of energy is transferred from one level of the trophic pyramid to another because:

• Energy is lost as heat during metabolic processes.

• Energy is completely transferred without any loss.

• Organisms at each level consume all available energy.

• Energy is stored indefinitely at each trophic level.

Tags

NGSS.MS-LS2-3

Ecological Efficiency is defined as:

• The rate at which energy is transferred from one trophic level to the next.

• The total amount of energy produced by photosynthesis.

• The energy lost as heat in an ecosystem.

• The number of species in a given area.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Standing Crop is defined as:

• The total biomass of living organisms in a given area at a given time.

• The rate at which energy is converted by photosynthetic and chemosynthetic autotrophs to organic substances.

• The total amount of energy fixed by photosynthesis in a given area over a given period of time.

• The amount of biomass produced by plants in a given area over a given period of time.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

All the energy in the ecosystem comes from ​ (a)   .

• the sun
• the food
• the chemicals
• the non-living things.

Tags

112.34.c.12.C

Label each TROPHIC LEVELS with the correct level.

a

b

c

d

e

Primary Consumers

Tertiary Consumers

Secondary Consumers

Decomposers

Producers

Tags

112.34.c.12.C

If birds eat insects that feed on acorns, which pyramid level would birds occupy? ​ (a)  

Tags

112.34.c.12.C